• 

  Hector Jing

  • 23 days ago
  • Motor drivers
  • Motor drivers forum

  DRV8870: Current Formula in Fast Decay Mode

  TI Thinks Resolved

  Part Number: DRV8870 Hi team, When the device works in slow current decay, both low-side FETs are enabled, and the current circuit loop is approximateto a LR discharge circuit，and the current decay formula related to the off-time and load is: where...
• 

  Taoran Jiang

  • 2 months ago
  • Motor drivers
  • Motor drivers forum

  DRV8870: Undershoot drop below -0.9V for 100ns

  TI Thinks Resolved

  Part Number: DRV8870 Hi team, My customer uses DRV8870, and the OUT pin voltage has a deep drop down to -0.9V, and the duration is 100ns. I suppose this is caused by dead time and the voltage is clamped by body diode to 0.9V. But -0.9V exceeds the...
• 

  Rick Duncan

  • 1 month ago
  • Motor drivers
  • Motor drivers forum

  RE: DRV8870: Motor drivers forum

  Hi Gary, The short circuit current is internally limited. Please see Figure 13 of the datasheet. This is an example of a short circuit event at VM=45V.
• 

  Peter Conklin

  • 2 months ago
  • Motor drivers
  • Motor drivers forum

  DRV8870: Motor Driver Component as High Side or Low Side Driver

  • Resolved

  Part Number: DRV8870 Can the DRV8870 be used to operate as a high side driver or as a low side
• 

  Wang5577

  • 4 months ago
  • Motor drivers
  • Motor drivers forum

  RE: DRV8870: Using DRV8870 without thermal pad connected

  Mark, DRV8870 can be operated without the thermal pad in this low power mode. But, if you put traces underneath the thermal pad, please make sure they are isolated from the thermal pad.
• 

  Iwata Etsuji

  • 5 months ago
  • Motor drivers
  • Motor drivers forum

  DRV8870: DRV8870 resistive load

  Part Number: DRV8870 Hello team, Is it possible to use DRV8870 for not inductive loads but any pure resistive loads? Could the internal current regulation circuit cause any problems(especially loop response) in pure resistive loads? Best regards,...
• 

  Hirokazu Takahashi

  • 6 months ago
  • Motor drivers
  • Motor drivers forum

  DRV8870: OUT1 or OUT2 short o GND

  TI Thinks Resolved

  Part Number: DRV8870 Hello Support team, I intentionally made the OUT1 terminal or OUT2 terminal short-circuited to GND and operated Forward and Reverse. The assumption was that overcurrent would occur and OCP or OTP would work, but no current flows...
• 

  Robin Yu

  • 7 months ago
  • Motor drivers
  • Motor drivers forum

  DRV8870: Largest RMS output current

  TI Thinks Resolved

  Part Number: DRV8870 Hi team, Customer wants to use DRV8870 as a resistive load driver. The largest RMS current would be about 2A(VM is about 18V@2A.) Do you think DRV8870 is a good device for this application. Thanks. Robin
• 

  Hirokazu Takahashi

  • 7 months ago
  • Motor drivers
  • Motor drivers forum

  DRV8870: Power up sequence

  • Resolved

  Part Number: DRV8870 Dear Support team, Does DRV8870 have any issue if the input sigunals for IN1/2
• 

  Annie Liu

  • 8 months ago
  • Motor drivers
  • Motor drivers forum

  DRV8870: Question for DRV8870

  TI Thinks Resolved

  Part Number: DRV8870 Hi Team, The customer is experiencing below issue and needs your help. The motor makes a high-frequency whistling sound when it rotates. He tested the input and output waveforms. The input PWM was normal when using a PWM driven...

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